Copper(II) acetylacetonate

Copper(II) acetylacetonate
Names
	Other names Bi(2,4-pentanedionato)copper; Cupric acetylacetonate
Identifiers
CAS Number	13395-16-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	17949957;
ECHA InfoCard	100.033.147
EC Number	236-477-9;
PubChem CID	139053110;
UNII	69QQY9TJ8M ;
CompTox Dashboard (EPA)	DTXSID50904281 ;
	InChI InChI=1S/2C5H8O2.Cu/c21-4(6)3-5(2)7;/h23,6H,1-2H3; Key: ZKXWKVVCCTZOLD-UHFFFAOYSA-N;
	SMILES CC(=CC(=O)C)O.CC(=CC(=O)C)O.[Cu];
Properties
Chemical formula	C10H14CuO4
Molar mass	261.764 g·mol−1
Appearance	blue solid
Density	0.721 g/cm3
Melting point	279–283 °C (534–541 °F; 552–556 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Copper(II) acetylacetonate is the coordination compound with the formula Cu(O₂C₅H₇)₂. It is the homoleptic acetylacetonate complex of copper(II). It is insoluble within water and exists as a bright blue solid. According to X-ray crystallography, the Cu center is square planar.^[1] Single crystals of this compound exhibit the unusual property of being highly flexible, allowing the formation of knots. The flexibility is attributed to the nature of the intermolecular forces.^[2]

^ Vreshch, Volodimir D.; Yang, Jen-Hsien; Zhang, Haitao; Filatov, Alexander S.; Dikarev, Evgeny V. (2010). "Monomeric Square-Planar Cobalt(II) Acetylacetonate: Mystery or Mistake?". Inorg. Chem. 49 (18): 8430–8434. doi:10.1021/ic100963r. PMID 20795642.
^ Aidan J. Brock, Jacob J. Whittaker, Joshua A. Powell, Michael C. Pfrunder, Arnaud Grosjean, Simon Parsons, John C. McMurtrie, Jack K. Clegg (2018). "Elastically Flexible Crystals have Disparate Mechanisms of Molecular Movement Induced by Strain and Heat". Angew. Chem. Int. Ed. 57 (35): 11325–11328. doi:10.1002/anie.201806431. PMID 29998602.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[1] Vreshch, Volodimir D.; Yang, Jen-Hsien; Zhang, Haitao; Filatov, Alexander S.; Dikarev, Evgeny V. (2010). "Monomeric Square-Planar Cobalt(II) Acetylacetonate: Mystery or Mistake?". Inorg. Chem. 49 (18): 8430–8434. doi:10.1021/ic100963r. PMID 20795642.

[2] Aidan J. Brock, Jacob J. Whittaker, Joshua A. Powell, Michael C. Pfrunder, Arnaud Grosjean, Simon Parsons, John C. McMurtrie, Jack K. Clegg (2018). "Elastically Flexible Crystals have Disparate Mechanisms of Molecular Movement Induced by Strain and Heat". Angew. Chem. Int. Ed. 57 (35): 11325–11328. doi:10.1002/anie.201806431. PMID 29998602.{{cite journal}}: CS1 maint: multiple names: authors list (link)

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